To get to know and feel the sleep such as sleep or not sleep enough, or not feeling well after wake, such as fresh or not. Feel whether or not subject to delay
Perceptions and feelings on sleep, such as sleep or not. It is enough sleep or not. As well as refreshing feeling after waking up or not. Tugging head or not
Perception and feelings, such as sleep sleep is good or not. A sleep enough or not. Includes the feeling after waking up, such as fresh or feel slowed head?